【摘要】 针对铝合金车削加工过程中工件表面温度难以准确测量和精准控制的问题，基于有限元软件建立铝合金A357的二维切削仿真模型；通过切削仿真分析得出不同切削速度和切深下的工件表面温度场分布规律；设计一种用于车削加工过程中在线测量工件表面温度的实验装置；通过车削实验，得到了切削过程中工件表面温度变化趋势。结果表明：该切削仿真模型可以有效地预测工件表面温度，为进一步分析精加工工件尺寸偏差、提高工件加工表面质量提供参考依据。更多还原

【Abstract】 To overcome the difficulty in precisely measuring and controlling the surface temperature of workpiece during turning process, the orthogonal cutting simulation model of the machining process of aluminum alloy A357 was established based on the finite element software. Through analysis on the cutting simulation model, the distribution law of the workpiece surface temperature field under different cutting speeds and cutting depths is obtained. An experimental setup is designed for online measurement of the workpiece surface temperature during the turning process. The variation trend of the workpiece surface temperature is verified through the turning experiment. The research results show that the cutting model can effectively predict the surface temperature of the workpiece, which can provide a reference for further analysis of workpiece size deviation in finishing process and improve workpiece surface quality.更多还原